General Upcoming tool allows you to restore to current firmware

[tymaster50]

Don't know if it's been posted but it works on all devices up to 6.1.2. So instead of forcing you to update to 1.3/1.4 you can stay on 1.2 and rejailbreak if you come across errors

http://www.ijailbreak.com/jailbreak/semi-restore-tool-coming-soon/

 

[dhlizard]

Don't know if it's been posted ...

Twice already, before your thread